A user-defined type facilitates handling multiple fields of related information in a table.
A user-defined type facilitates handling multiple fields of related information in a table. Applications that required multiple tables can be simplified to use fewer tables by using a user-defined type to represent the related fields of information instead of storing the information in a separate table. The address type example demonstrates how to use a user-defined type.
The scope of a user-defined type is the keyspace in which you define it. Use dot
notation to access a type from a keyspace outside its scope: keyspace name followed by a
period followed the name of the type, for example:
test is the keyspace name and
myType is the type
Cassandra accesses the type in the specified keyspace, but does not change the current
keyspace; otherwise, if you do not specify a keyspace, Cassandra accesses the type within the